Vitina, Aisma, Silke Lüers, Anna-Kathrin Wallasch, Volker Berkhout, Aidan Duffy, Brendan Cleary, Lief I. Husabø, David E. Weir, Roberto Lacal-Arántegui, Maureen Hand et al. IEA Wind Task 26: Wind Technology, Cost, and Performance Trends in Denmark, Germany, Ireland, Norway, the European Union, and the United States: 2007–2012. National Renewable Energy Laboratory (NREL), 2015.
Todd, Annika, Michael Perry, Brian Smith, Michael Sullivan, Peter Cappers, and Charles A. Goldman. Insights from Smart Meters: Ramp-up, dependability, and short-term persistence of savings from Home Energy Reports. State and Local Energy Efficiency Action Network (SEE Action), 2015.
Hoffman, Ian M., Gregory M. Rybka, Greg Leventis, Charles A. Goldman, Lisa C. Schwartz, Megan A. Billingsley, and Steven R. Schiller. The Total Cost of Saving Electricity Through Utility Customer-Funded Energy Efficiency Programs: Estimates at the National, State, Sector and Program Level., 2015.
Kramer, Chris, Emily Martin Fadrhonc, Peter J. Thompson, and Charles A. Goldman. Accessing Secondary Markets as a Capital Source for Energy Efficiency Finance Programs: Program Design Considerations for Policymakers and Administrators. State and Local Energy Efficiency Action Network, 2015.
Todd, Annika, Michael Perry, Brian Smith, Michael Sullivan, Peter Cappers, and Charles A. Goldman. Insights from Smart Meters: Identifying Specific Actions, Behaviors and Characteristics that drive savings in Behavior-Based Programs. State and Local Energy Efficiency Action Network (SEE Action), 2014.